Home / 12,720.08-17,544.84-12,291.92

Finding the Fourth Proportional to 12,720.08, 17,544.84 and 12,291.92

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Solution

The fourth proportional to 12,720.08, 17,544.84 and 12,291.92 is: 16,954.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,720.08 : 17,544.84 = 12,291.92 : x
  2. Step 2: Convert to fraction form
    12,720.08/17,544.84 = 12,291.92/x
  3. Step 3: Cross multiply
    12,720.08x = 17,544.84 × 12,291.92
  4. Step 4: Simplify right side
    12,720.08x = 215,659,769.69
  5. Step 5: Solve for x
    x = 215,659,769.69/12,720.08
  6. Step 6: Final answer
    x = 16,954.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.